From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Thu, 8 Apr 2021 20:01:21 +0000 (-0400)
Subject: misc/sgi-gru/grufault: Use vma_lookup() in gru_find_vma()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b55fa36990a286b22d1d1194fd0be5d3f32be0a9;p=users%2Fjedix%2Flinux-maple.git

misc/sgi-gru/grufault: Use vma_lookup() in gru_find_vma()

Use vma_lookup() to avoid needing to validate the VMA returned and for
easier to read code.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---

diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 723825524ea0..d7ef61e602ed 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -49,8 +49,8 @@ struct vm_area_struct *gru_find_vma(unsigned long vaddr)
 {
 	struct vm_area_struct *vma;
 
-	vma = find_vma(current->mm, vaddr);
-	if (vma && vma->vm_start <= vaddr && vma->vm_ops == &gru_vm_ops)
+	vma = vma_lookup(current->mm, vaddr);
+	if (vma && vma->vm_ops == &gru_vm_ops)
 		return vma;
 	return NULL;
 }